.intro__title{
  margin: 0;
  padding: 0;
  font-style: normal;
  font-weight: 900;
  font-size: 54px;
  line-height: 58px;
  color: #FFFFFF;
}

@media screen and (max-width: 768px) {
  .intro__title{
    font-size: calc( (100vw - 320px)/(768 - 320) * (54 - 32) + 32px);
  }
}

@media screen and (max-width: 450px) {
  .intro__title{
    line-height: 45px;
  }
}

@media screen and (max-width: 320px) {
  .intro__title{
    font-size: 32px;
    line-height: 35px;
  }
}